因为工作需要需要在XP上运行一个C#编写的Winform插件，我就用Framework2.0，因为存在接口交互所以想保留交易过程的入参出参。
考虑到插件本身实施的因素，就没有使用Log4、NLog等成熟的日志插件。在网上搜索了一个是通过TextWriterTraceListener实现的，但是实际使用
过程中发现并没实现我想要的功能，于是乎自己重新造了个轮子，如果大家有需要可以参考下。
1 /// <summary> 2 /// 日志类型 3 /// </summary> 4 public enum LogType 5 { 6 Error, 7 Trace, 8 Info 9 } 10 11 /// <summary> 12 /// 日志类 13 /// 支持同步和异步 14 /// </summary> 15 public sealed class Logger 16 { 17 18 #region 变量|常量 19 20 /// <summary> 21 /// 用于Trace的组织输出的类别名称 22 /// </summary> 23 private const string error = " ***********************EXCEPTION {0}***********************"; 24 25 /// <summary> 26 /// 跟踪 27 /// </summary> 28 private const string trace = " *************************TRACE {0}*******************************"; 29 30 /// <summary> 31 /// 信息 32 /// </summary> 33 private const string info = " ****************************INFO {0}********************************"; 34 35 /// <summary> 36 /// 1 仅控制台输出 37 /// 2 仅日志输出 38 /// 3 控制台+日志输出 39 /// </summary> 40 private static readonly int flag = 2; //可以修改成从配置文件读取 41 42 #endregion 43 44 #region 委托 45 46 private delegate void AsyncLogException(Exception ex); 47 private delegate void AyyncLog(string msg, LogType type); 48 private delegate void AsyncLogSqlCommand(SqlCommand cmd); 49 private delegate void AsyncLogSql(string sql, params SqlParameter[] parameter); 50 51 private static void BeginError(Exception ex) 52 { 53 if (null != ex) 54 { 55 string path = GetLogPath(LogType.Error); 56 //输出日志头 57 WriteLog(path, string.Format(error, DateTime.Now)); 58 while (null != ex) 59 { 60 WriteLog(path, string.Format("{0} {1} {2} Source:{3}", ex.GetType().Name, ex.Message, ex.StackTrace, ex.Source)); 61 ex = ex.InnerException; 62 } 63 } 64 } 65 66 private static void BeginTrace(string msg, LogType type) 67 { 68 if (string.IsNullOrEmpty(msg)) return; 69 string path = GetLogPath(type); 70 //输出日志头 71 WriteLog(path, string.Format(trace, DateTime.Now)); 72 //输出日志内容 73 WriteLog(path, msg); 74 } 75 #endregion 76 77 #region IO操作 78 /// <summary> 79 /// 获取日志类型对应的日志存储环境 80 /// </summary> 81 /// <param name="type">日志类型</param> 82 /// <returns></returns> 83 private static string GetLogPath(LogType type) 84 { 85 DateTime time = DateTime.Now; 86 string subdir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "logs"); 87 subdir = Path.Combine(subdir, type.ToString()); 88 subdir = Path.Combine(subdir, time.ToString("yyyyMM")); 89 if (!Directory.Exists(subdir)) 90 { 91 Directory.CreateDirectory(subdir); 92 } 93 string result = Path.Combine(subdir, time.ToString("yyyyMMdd") + ".log"); 94 return result; 95 } 96 97 /// <summary> 98 /// 写入日志 99 /// </summary> 100 /// <param name="path">日志环境</param> 101 /// <param name="text">写入的文本值</param> 102 private static void WriteLog(string path, string text) 103 { 104 string filePath = Path.GetDirectoryName(path); 105 if (Directory.Exists(filePath) == false) 106 { 107 Directory.CreateDirectory(filePath); 108 } 109 if (File.Exists(path)) 110 { 111 using (StreamWriter sw = File.AppendText(path)) 112 { 113 sw.WriteLine(text + " "); 114 sw.Flush(); 115 sw.Close(); 116 } 117 } 118 else 119 { 120 StreamWriter sr = File.CreateText(path); 121 sr.WriteLine(text + " "); 122 sr.Flush(); 123 sr.Close(); 124 } 125 } 126 #endregion 127 128 #region 发布的方法 129 /// <summary> 130 /// 写入异常日志 131 /// </summary> 132 /// <param name="ex">异常对象</param> 133 /// <param name="isAsync">是否异步,默认异步</param> 134 public static void Error(Exception ex, bool isAsync = true) 135 { 136 if (isAsync) 137 new AsyncLogException(BeginError).BeginInvoke(ex, null, null); 138 else 139 BeginError(ex); 140 } 141 142 /// <summary> 143 /// 写入错误日志 144 /// </summary> 145 /// <param name="msg">错误信息</param> 146 /// <param name="isAsync">是否异步,默认异步</param> 147 public static void Error(string msg, bool isAsync = false) 148 { 149 if (isAsync) 150 new AyyncLog(BeginTrace).BeginInvoke(msg, LogType.Error, null, null); 151 else 152 BeginTrace(msg, LogType.Error); 153 } 154 155 /// <summary> 156 /// 异步跟踪日志 157 /// </summary> 158 /// <param name="msg"></param> 159 public static void Trace(string msg, bool isAsync = true) 160 { 161 if (isAsync) 162 new AyyncLog(BeginTrace).BeginInvoke(msg, LogType.Trace, null, null); 163 else 164 BeginTrace(msg, LogType.Trace); 165 } 166 167 168 /// <summary> 169 /// 写入日志信息,日志类型为info 170 /// </summary> 171 /// <param name="msg">日志信息</param> 172 /// <param name="isAsync">是否异步,默认异步</param> 173 public static void Info(string msg, bool isAsync = true) 174 { 175 if (isAsync) 176 new AyyncLog(BeginTrace).BeginInvoke(msg, LogType.Info, null, null); 177 else 178 BeginTrace(msg, LogType.Info); 179 } 180 #endregion 181 182 } 183 }
调用代码:
private void button1_Click_1(object sender, EventArgs e) { Logger.Info("测试"); }
运行效果如下:
